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Morphology of Cacti - Subfamily Cactoideae, Tribe – Browningieae Buxbaum 1966

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Habit

Large, treelike or shrubby (Anderson 2001).

Stems

Segmented or unsegmented, columnar, ribbed, usually heavily spined; reproductive areas undifferentiated though changing in spination

Leaves

Absent

Areoles

 

Flower

Borne laterally, medium to large, usually nocturnal; pericarpels with imbricate scales, areoles with spines or bristles

Fruits

Fleshy, indehiscent, scaly, spiny, or naked

Seeds

Medium to large, often rugose; hilum and micropyle conjunct, appendages none, mucilage sheath sometimes present

Glochids

Absent

Spines

 

Roots

Fibrous or tuberous roots

Metabolism

CAM - Crassulacean acid metabolism (Anderson 2001).

Neoteny or paedomorphosis

Absent

Distribution

Andean area of South America and the Galapagos Islands

  

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